Self-sealing strip heat-sealing device of packaging machine

Abstract

The utility model discloses a self-sealing strip heat sealing device of a packaging machine, which comprises a first moving seat and a second moving seat, the first moving seat and the second moving seat are connected with corresponding moving adjusting components, an upper lifting seat and a lower lifting seat are movably arranged on the first moving seat and the second moving seat, and cylinders are arranged on the first moving seat and the second moving seat. A piston rod of the air cylinder is connected with an upper lifting seat, an upper heat sealing block is installed on the upper lifting seat, a lower heat sealing block is arranged below the upper heat sealing block, the lower heat sealing block is arranged on a lower lifting seat, a rolling wheel is arranged on the lower lifting seat, the rolling wheel abuts against a driving cam, the driving cam is in key connection with a driving shaft, and the driving shaft is in key connection with the upper lifting seat. The output end of the driving motor is connected with the driving shaft, and when the first moving seat and the second moving seat move, the driving cam is driven to move in the axial direction of the driving shaft. According to the utility model, the precise heat sealing of the self-sealing strip can be realized, the horizontal position of the heat sealing block can be adjusted according to the specification change, and the use is more flexible.

Description

Technical Field

[0001] The utility model relates to packaging equipment, in particular to a self-sealing strip heat-sealing device for a packaging machine. Background Art

[0002] A packaging machine is a device for packaging materials. One type of packaging machine needs to heat-seal a self-sealing strip at the opening of a packaging substrate to enable repeated opening or closing during subsequent use. Currently, the defects of the self-sealing strip heat-sealing devices on the market are as follows: during operation, generally a stationary heat-sealing block and a moving heat-sealing block cooperate for heat-sealing, and the moving heat-sealing block is driven by a cylinder structure. During long-term use, there may be a problem that the moving heat-sealing block does not move into place, resulting in poor heat-sealing quality; in addition, according to different packaging bag specifications, the heat-sealing position of the self-sealing strip will change to a certain extent, and the horizontal position of the heat-sealing block with the above structure cannot be adjusted, which leads to poor flexibility in its use, or the need to adjust the position of the packaging bag substrate itself during heat-sealing, resulting in very troublesome adjustment operations. Summary of the Utility Model

[0003] In view of the deficiencies in the background art, the technical problem to be solved by the present utility model is to provide a self-sealing strip heat-sealing device for a packaging machine for solving the above problems.

[0004] To this end, the present utility model is implemented as follows:

[0005] A self-sealing strip heat-sealing device for a packaging machine, characterized in that: it includes a first moving seat and a second moving seat, the first and second moving seats are connected to corresponding moving adjustment components, upper and lower lifting seats are movably arranged on both the first and second moving seats, cylinders are arranged on both the first and second moving seats, the piston rod of the cylinder is connected to the upper lifting seat, an upper heat-sealing block is installed on the upper lifting seat, a lower heat-sealing block is arranged below the upper heat-sealing block, the lower heat-sealing block is arranged on the lower lifting seat, rollers are arranged on the lower lifting seat, the rollers are pressed against a driving cam, the driving cam is key-connected to a driving shaft, and the output end of the driving motor is connected to the driving shaft. When the first and second moving seats move, it will drive the driving cam to perform axial movement along the driving shaft.

[0006] The moving adjustment component includes a first adjustment screw rod and a second adjustment screw rod rotatably arranged on a base, the first adjustment screw rod is screwed to the first moving seat, the second adjustment screw rod is screwed to the second moving seat, sliding seats are arranged on both the first and second moving seats, and slide rails cooperating with the sliding seats are arranged on the base.

[0007] At the corresponding positions of the bottoms of the first and second moving seats, a first push block and a second push block are provided. The driving cam is located between the first and second push blocks, and the distance between the first and second push blocks is greater than the thickness of the driving cam.

[0008] A first placement plate and a second placement plate are provided on the top of the lower heat-sealing block, and a clamping groove is formed between the first and second placement plates.

[0009] For the self-sealing strip heat-sealing device of the packaging machine with the above technical solution, by respectively arranging the upper and lower heat-sealing blocks on the upper and lower lifting seats, and configuring a pneumatic and cam transmission structure to drive the upper and lower lifting seats to lift, it can effectively ensure that the self-sealing strip can be stably pressed on the packaging substrate for heat-sealing, ensuring the heat-sealing quality; at the same time, by arranging the upper and lower lifting seats on the moving seat, the horizontal position of the heat-sealing can be adjusted by adjusting the horizontal movement of the moving seat, so as to adapt to different specifications of packaging bags. The adjustment operation is very simple, and the flexibility of its use is effectively improved. Description of the Drawings

[0010] The present utility model has the following drawings:

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a top view of the present utility model;

[0013] Figure 3 is a side view of the present utility model after removing part of the frame;

[0014] Figure 4 is Figure 1 a partial enlarged view at the position pointed by A in

[0015] Figure 5 is a structural diagram of the self-sealing strip. Detailed Embodiments

[0016] As shown in the figure, a self-sealing strip heat-sealing device of a packaging machine disclosed by the present utility model includes a first moving seat 6 and a second moving seat 11. The first and second moving seats are connected to corresponding moving and adjusting components. An upper lifting seat 2 and a lower lifting seat 7 are movably arranged on both the first and second moving seats. A cylinder 1 is arranged on both the first and second moving seats. The piston rod of the cylinder 1 is connected to the upper lifting seat 2. An upper heat-sealing block 3 is installed on the upper lifting seat 2. A lower heat-sealing block 5 is arranged below the upper heat-sealing block 3. The lower heat-sealing block 5 is arranged on the lower lifting seat 7. A roller 8 is arranged on the lower lifting seat 7. The roller 8 abuts against a driving cam 9. A guiding component is arranged corresponding to the lower lifting seat 7. For example, a sliding seat is arranged on the lower lifting seat 7, and a slide rail cooperating with the sliding seat is arranged on the moving seat. The driving cam 9 is key-connected to a driving shaft 10. The output end of a driving motor 4 is connected to the driving shaft 10. When the first and second moving seats move, it will drive the driving cam 9 to axially move along the driving shaft 10, ensuring that when the first and second moving seats perform a large-range moving adjustment, the driving cam 9 and the roller 8 will not be misaligned. Specifically, the moving and adjusting component includes a first adjusting screw 16 and a second adjusting screw 14 rotatably arranged on a base. The first adjusting screw 16 is connected to a first handwheel 13, and the second adjusting screw 14 is connected to a second handwheel 12. Of course, corresponding motors can also be arranged to be connected to the first and second adjusting screws to achieve electric and automatic control adjustment. The first adjusting screw 16 is screwed to the first moving seat 6, and the second adjusting screw 14 is screwed to the second moving seat 11. Sliding seats are arranged on both the first and second moving seats, and a slide rail 15 cooperating with the sliding seats is arranged on the base. By controlling the rotation of the first and second adjusting screws, the first and second moving seats can be driven to horizontally move along the slide rail 15 to adjust the horizontal position of the heat-sealing component. First push blocks 17 and second push blocks 18 are arranged at the bottom of the first and second moving seats corresponding to the driving cam 9. The driving cam 9 is located between the first and second push blocks, and the distance between the first and second push blocks is greater than the thickness of the driving cam 9. By adopting this structure, when the moving seat moves, the driving cam 9 can be pushed to move through the first and second push blocks. And when adjusting the movement of the moving seat, this structure can drive the moving seat to move a little more than the required position, and then control the moving seat to move back a little distance so that it moves to the required position. And at this time, both the first and second push blocks can be separated from the side surface of the driving cam 9 to avoid friction and interference with the rotation of the driving cam 9. A first placing plate 19 and a second placing plate 21 are arranged on the top of the lower heat-sealing block 5. A clamping groove 20 is formed between the first and second placing plates. The first and second placing plates facilitate the placement of the strip portion 22 of the self-sealing strip, and the clamping groove 20 facilitates the clamping of the insertion portion 23 of the self-sealing strip to achieve the positioning placement of the self-sealing strip.

[0017] The working principle of the utility model is as follows: Place the self-sealing strip on the lower heat-sealing block 5, and let the packaging substrate pass between the upper and lower heat-sealing blocks. Control the cylinder 1 to drive the upper lifting seat 2 and the upper heat-sealing block 3 to descend, and control the driving motor to drive the driving shaft 10 and the driving cam 9 to rotate. Through the transmission of the roller 8, drive the lower lifting seat 7 and the lower heat-sealing block 5 to rise, so that the self-sealing strip and the packaging substrate are pressed tightly between the upper and lower heat-sealing blocks to complete the heat-sealing operation of the self-sealing strip. When the specification of the packaging bag changes, the first and second adjusting screws can be controlled to rotate, driving the first and second moving seats to move horizontally, adjusting the horizontal position of the heat-sealing assembly, and thus adapting to the specification of the packaging bag.

[0018] With this structure of the utility model, by respectively arranging the upper and lower heat-sealing blocks on the upper and lower lifting seats and configuring a pneumatic and cam transmission structure to drive the upper and lower lifting seats to rise and fall, it can effectively ensure that the self-sealing strip can be stably pressed on the packaging substrate for heat-sealing, ensuring the heat-sealing quality. At the same time, by arranging the upper and lower lifting seats on the moving seat, the horizontal position of the heat-sealing can be adjusted by adjusting the horizontal movement of the moving seat, adapting to different specifications of packaging bags. The adjustment operation is very simple, and the flexibility of its use is effectively improved.

Claims

1. A self-sealing strip heat-sealing device for a packaging machine, characterized in that: It includes a first moving seat (6) and a second moving seat (11). The first and second moving seats are connected to corresponding moving adjustment components. An upper lifting seat (2) and a lower lifting seat (7) are movably arranged on both the first and second moving seats. A cylinder (1) is arranged on both the first and second moving seats. The piston rod of the cylinder (1) is connected to the upper lifting seat (2). An upper heat-sealing block (3) is installed on the upper lifting seat (2). A lower heat-sealing block (5) is arranged below the upper heat-sealing block (3). The lower heat-sealing block (5) is arranged on the lower lifting seat (7). A roller (8) is arranged on the lower lifting seat (7). The roller (8) presses against a driving cam (9). The driving cam (9) is key-connected to a driving shaft (10). The output end of a driving motor (4) is connected to the driving shaft (10). When the first and second moving seats move, it will drive the driving cam (9) to axially move along the driving shaft (10).

2. The self-sealing strip heat-sealing device of a packaging machine according to claim 1, characterized in that: The moving adjustment component includes a first adjustment screw rod (16) and a second adjustment screw rod (14) rotatably arranged on a base. The first adjustment screw rod (16) is screwed to the first moving seat (6), and the second adjustment screw rod (14) is screwed to the second moving seat (11). Slide seats are arranged on both the first and second moving seats. A slide rail (15) cooperating with the slide seats is arranged on the base.

3. The self-sealing strip heat-sealing device of a packaging machine according to claim 1, characterized in that: First push blocks (17) and second push blocks (18) are arranged at the bottoms of the first and second moving seats corresponding to the driving cam (9). The driving cam (9) is located between the first and second push blocks, and the distance between the first and second push blocks is greater than the thickness of the driving cam (9).

4. The self-sealing strip heat-sealing device of a packaging machine according to claim 1, wherein: A first placing plate (19) and a second placing plate (21) are arranged at the top of the lower heat-sealing block (5). A clamping groove (20) is formed between the first and second placing plates.

Images